TABLE 4:
Data for Missed Aneurysms (n = 7)
| Location | Size (mm) | Main Reason for Missed Aneurysm |
|---|---|---|
| Posterior communicating artery | 4 | Atypical configuration |
| Posterior inferior cerebellar artery | 4 | Obscured by hemorrhage |
| ICA (para-ophthalmic) | 3 | Small, adjacent to bone |
| Posterior communicating artery | 2 | Very small, adjacent to bone |
| ICA (cavernous segment) | 2 | Very small, adjacent to bone |
| Anterior choroidal artery | 2 | Very small, adjacent to bone |
| Basilar tip | 1 | Very small |
Note.—ICA indicates internal carotid artery.